A compacting device for highway engineering

Abstract

The present invention provides a tamping device for highway engineering, which belongs to the technical field of road construction, and includes a shell, a tamping head, a lifter, a support plate, an electromagnet and a proximity switch. The lifter lifts the tamping head, so that the iron core rises and penetrates into the coil on the support plate. When the tamping head approaches the proximity switch on the support plate, the proximity switch is closed, the coil and the electromagnet are energized, the iron core generates magnetic force and repels the magnetism of the electromagnet, and the lifter releases the tamping head after rising to a predetermined position. The tamping head falls away from the proximity switch, and the proximity switch is disconnected. The tamping device for highway engineering provided by the present invention increases the tamping strength when the tamping head falls by making the electromagnet and the iron core generate mutually repelling magnetic forces, thereby effectively improving the tamping efficiency and reducing the labor intensity of the workers.

Description

Technical Field

[0001] The invention belongs to the technical field of road construction, and more specifically, relates to a compacting device for highway engineering. Background Art

[0002] With the continuous development of social economy and the continuous improvement of people's living standards, the number of vehicles has gradually increased, causing serious damage to the roads. Therefore, the highway maintenance department needs to frequently maintain and repair the roads. At present, in the process of paving and maintaining roads, in order to make the road surface more solid after construction, it is necessary to compact the road surface, and a compaction device is often used for this. In the operation process of the existing compaction device, the compaction head is usually lifted to a certain height by the built-in elevator and then released. The compaction head compacts the ground through free fall. Although the above compaction method can compact the ground, the compaction strength of the compaction head during the operation is limited by its own weight, resulting in low compaction efficiency, long working time for workers, and increased labor intensity. Summary of the invention

[0003] The purpose of the present invention is to provide a compacting device for highway engineering, aiming to solve the problems in the prior art that the compacting strength of the compacting head is insufficient and the compacting efficiency is low.

[0004] To achieve the above object, the technical solution adopted by the present invention is: to provide a compaction device for highway engineering, comprising:

[0005] case;

[0006] A tamping head, the tamping head being slidably disposed inside the shell;

[0007] An elevator, arranged on the housing, comprising a power mechanism and a clamping mechanism, wherein the clamping mechanism is used to clamp the tamping head, and the power mechanism is used to lift the clamping mechanism;

[0008] A support plate is arranged in the shell and is located above the tamping head. A guide hole is arranged on the support plate. A coil is arranged on the upper end surface of the support plate. The coil is concentric with the guide hole, and the inner diameter of the coil is greater than or equal to the aperture of the guide hole. An iron core is slidably penetrated in the guide hole, and the lower end of the iron core is fixedly connected to the tamping head.

[0009] An electromagnet is disposed on the upper portion of the housing, is located above the coil, and corresponds to the iron core;

[0010] A proximity switch, disposed on one side of the support plate close to the tamping head, for sensing the position of the tamping head to open or close the circuit between the coil and the electromagnet;

[0011] The elevator lifts the tamping head, causing the iron core to rise and penetrate into the coil. When the tamping head approaches the proximity switch on the support plate, the proximity switch is closed, the coil and the electromagnet are energized, the iron core generates magnetic force and repels the magnetism of the electromagnet. After the elevator rises to a predetermined position, the tamping head is released, and the tamping head falls away from the proximity switch, and the proximity switch is disconnected.

[0012] In a possible implementation, a guard plate is provided between the support plate and the tamping head, the guard plate is slidably connected to the shell, a first clearance hole for avoiding the iron core is provided on the guard plate, and a first elastic member is provided between the support plate and the guard plate.

[0013] In one possible implementation, a pull rod is fixed on the tamping head, and the end of the pull rod away from the tamping head longitudinally upward penetrates the guard plate and the support plate in sequence, and extends to the top of the support plate. The pull rod is slidably connected to the guard plate and the support plate. A clamping head is provided at the end of the pull rod away from the tamping head for cooperating with the clamping mechanism.

[0014] In a possible implementation, the clamping mechanism includes a connecting frame and a rotating rod, the power mechanism is connected to the connecting frame, there are two rotating rods, which are symmetrically hinged on both sides of the connecting frame, and the rotating rod includes a first rod body and a second rod body connected from top to bottom, the first rod body is inclined inward from bottom to top, and the second rod body is inclined inward from top to bottom, the connecting frame is hinged to the second rod body, and a claw is provided at one end of the second rod body away from the first rod body, and the claw is used to clamp the clamping head.

[0015] In one possible implementation, the claw protrudes laterally toward one side of the clamping head, the upper end surface of the claw is a horizontal plane, the end of the claw away from the second rod body has a guide surface inclined outward from top to bottom, the clamping head is an enlarged block provided at the end of the pull rod, the lower end surface of the enlarged block is a horizontal plane, the distance between the two oppositely arranged claws is smaller than the width of the enlarged block, the claw moves from top to bottom, guiding the guide surface to slide on the side of the enlarged block, causing the second rod body to rotate outward so that the claw moves to below the enlarged block.

[0016] In a possible implementation, an end cover is provided on the top of the shell, and a through hole is opened on the end cover. The action end of the power mechanism passes through the through hole and is connected to the connecting frame. The power mechanism is started to drive the connecting frame to move upward, so that the first rod body is inserted into the through hole, and the two first rod bodies approach each other, so that the second rod body rotates outward, so that the claw is separated from the enlarged block.

[0017] In a possible implementation, the connecting frame includes a cross bar and a longitudinal bar that are fixedly connected, the second rod body is hinged on the cross bar, the action end of the power mechanism is connected to the longitudinal bar, and longitudinal sliding grooves are provided on the two side walls of the shell corresponding to the cross bar, and the cross bar is slidably connected in the sliding grooves.

[0018] In a possible implementation manner, a second elastic member is provided between the longitudinal rod and the first rod body.

[0019] In a possible implementation manner, a bracket is provided on the top of the shell, and the power mechanism is arranged on the bracket.

[0020] In a possible implementation, a mounting seat is provided on the side wall of the shell, and the mounting seat is used to be connected to a traction machine.

[0021] The beneficial effect of a tamping device for highway engineering provided by the present invention is that: compared with the prior art, the tamping device for highway engineering provided by the present invention is provided with a coil and an electromagnet in a shell, and an iron core is provided on a tamping head. When the tamping head is lifted to a predetermined position under the action of an elevator, the iron core rubs and penetrates into the coil, and the tamping head approaches a proximity switch. The proximity switch is closed, and the coil and the electromagnet are energized, so that a magnetic force is generated in the iron core, and the magnetic force generated by the iron core and the magnetic force generated by the electromagnet are set to repel each other. After that, the elevator releases the tamping head, and under the dual action of gravity and magnetic force, the tamping head falls quickly and tamps the ground. The tamping device for highway engineering provided by the present invention increases the tamping strength of the tamping head when it falls by making the electromagnet and the iron core generate mutually repelling magnetic forces, thereby effectively improving the tamping efficiency and reducing the labor intensity of the workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A front cross-sectional view of a compaction device for highway engineering provided by an embodiment of the present invention in a non-working state;

[0024] Figure 2 For along Figure 1 The cross-sectional structure diagram along the AA line;

[0025] Figure 3 For along Figure 1 The cross-sectional structure diagram of the middle BB line;

[0026] Figure 4 It is a schematic diagram of the structure when the claw descends to a predetermined position in the working state;

[0027] Figure 5 It is a schematic diagram of the structure when the claw rises to a predetermined position in the working state.

[0028] Description of reference numerals:

[0029] 1. Shell; 101. End cover; 102. Through hole; 103. Bracket; 2. Ramming head; 21. Iron core; 22. Pull rod; 221. Expanded block; 3. Connecting frame; 31. Longitudinal rod; 32. Cross rod; 321. Second slide groove; 33. Second elastic member; 4. Rotating rod; 41. First rod body; 42. Second rod body; 421. Claw; 422. Guide surface; 5. Support plate; 6. Coil; 7. Electromagnet; 8. Guard plate; 81. First elastic member; 82. First slide groove; 9. Proximity switch; 10. Mounting seat; 11. Electric telescopic cylinder. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0032] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] See also Figures 1 to 5 , a tamping device for highway engineering provided by the present invention is now described. The tamping device for highway engineering includes a shell 1, a tamping head 2, a lift, a support plate 5, an electromagnet 7 and a proximity switch 9, wherein the tamping head 2 is slidably arranged inside the shell 1, the lift is arranged on the shell 1, and includes a power mechanism and a clamping mechanism, the clamping mechanism is used to clamp the tamping head 2, the power mechanism is used to lift the clamping mechanism, the support plate 5 is arranged in the shell 1, and is located above the tamping head 2, a guide hole is provided on the support plate 5, a coil 6 is provided on the upper end surface of the support plate 5, the coil 6 is concentric with the guide hole, and the inner diameter of the coil 6 is greater than or equal to the aperture of the guide hole, an iron core 21 is slidably penetrated in the guide hole, and the lower end of the iron core 21 is fixed to the tamping head 2 Fixed connection, the electromagnet 7 is arranged on the upper part of the shell 1, and is located above the coil 6, and corresponds to the iron core 21. The proximity switch 9 is arranged on the side of the support plate 5 close to the tamping head 2, and is used to sense the position of the tamping head 2 to open or close the circuit between the coil 6 and the electromagnet 7. The elevator lifts the tamping head 2, so that the iron core 21 rises and penetrates into the coil 6. When the tamping head 2 approaches the proximity switch 9 on the support plate 5, the proximity switch 9 is closed, the coil 6 and the electromagnet 7 are energized, the iron core 21 generates magnetic force and repels the magnetism of the electromagnet 7. After the elevator rises to the predetermined position, the tamping head 2 is released, and the tamping head 2 falls away from the proximity switch 9, and the proximity switch 9 is disconnected.

[0035] The present invention provides a tamping device for highway engineering. Compared with the prior art, the present invention provides a tamping device for highway engineering. By arranging a coil 6 and an electromagnet 7 in a housing 1 and arranging an iron core 21 on a tamping head 2, when the tamping head 2 is lifted to a predetermined position by an elevator, the iron core 21 rubs and penetrates into the coil 6, and the tamping head 2 approaches a proximity switch 9. The proximity switch 9 is closed, so that the coil 6 and the electromagnet 7 are energized, thereby generating a magnetic force in the iron core 21, and the magnetic force generated by the iron core 21 and the magnetic force generated by the electromagnet 7 are set to repel each other. After that, the elevator releases the tamping head 2. Under the dual action of gravity and magnetic force, the tamping head 2 falls quickly and tamps the ground. The tamping device for highway engineering provided by the present invention increases the tamping strength of the tamping head 2 when it falls by making the electromagnet 7 and the iron core 21 generate mutually repelling magnetic forces, thereby effectively improving the tamping efficiency and reducing the labor intensity of the workers.

[0036] In some embodiments, see Figures 1 to 5The shell 1 is a square cylindrical shell 1 structure, the lower end of the shell 1 is provided with an opening, the upper end is provided with an end cover 101, a support plate 5 is transversely arranged at the middle position inside the shell 1, the support plate 5 is fixedly connected to the shell 1, and the tamping head 2 is arranged below the support plate 5. The tamping head 2 is a square block, and its size is adapted to the contour size inside the shell 1. The tamping head 2 can slide up and down along the inner wall of the shell 1, and a guard plate 8 is transversely arranged between the tamping head 2 and the support rod. A first slide groove 82 is arranged in the upper and lower directions along the side wall corresponding to the length direction of the guard plate 8 inside the shell 1, and the guard plate 8 is slidably arranged in the first slide groove 82, wherein the upper edge of the first slide groove 82 is aligned with the support plate 5. The lower edge of the tamping head 2 is flush with that of the guard plate 8. A plurality of first elastic members 81 are provided between the support plate 5 and the guard plate 8. Optionally, the first elastic member 81 is a spring. By providing the first elastic member 81, the tamping head 2 drives the guard plate 8 to compress the first elastic member 81 during the rising process. The first elastic member 81 is compressed to generate elastic potential energy. When the tamping head 2 is released, the first elastic member 81 releases the elastic force at the same time, thereby increasing the downward impact force of the tamping head 2 and improving the tamping strength. The proximity switch 9 is provided on the side of the support plate 5 close to the guard plate 8, and is located at the edge of the support plate 5 close to the side wall of the shell 1. The guard plate 8 is moved up and down to approach the proximity switch 9, so that the proximity switch 9 is closed or disconnected.

[0037] In this example, see Figures 1 to 5 An iron core 21 is fixedly connected to the middle part of the upper end of the tamping head 2, and a first make way hole for avoiding the iron core 21 is opened at the position corresponding to the iron core 21 on the guard plate 8, and a guide hole for avoiding the iron core 21 is opened at the position corresponding to the iron core 21 on the support plate 5. The coil 6 is arranged on the upper end surface of the support plate 5, and the coil 6 corresponds to and is concentric with the guide hole. In order to facilitate the passage of the iron core 21, the inner diameter of the coil 6 is set to be greater than or equal to the aperture of the guide hole. When in use, the iron core 21 can be inserted into the coil 6 with the help of the first make way hole and the guide hole under the drive of the tamping head 2.

[0038] Furthermore, a pull rod 22 is fixed on the upper end surface of the tamping head 2. In the present embodiment, there are two pull rods 22, which are symmetrically arranged on both sides of the iron core 21. The end of the pull rod 22 away from the tamping head 2 passes through the guard plate 8 and the support plate 5 upward and extends to the top of the support plate 5. A clamping head is provided at the end of the pull rod 22 away from the tamping head 2. During operation, the clamping mechanism of the elevator is clamped on the clamping head. With the help of the pull rod 22, the elevator can drive the tamping head 2 to move upward.

[0039] See also Figures 1 to 5The lift includes a power mechanism arranged outside the shell 1 and a clamping mechanism arranged inside the shell 1, wherein the power mechanism can be selected as an electric telescopic cylinder 11. Specifically, a bracket 103 is provided on the upper end cover 101 of the shell 1, and the electric telescopic cylinder 11 is installed on the bracket 103. A through hole 102 is opened on the end cover 101, and the action end of the electric telescopic cylinder 11 is connected to the clamping mechanism located in the shell 1 through the through hole 102.

[0040] See also Figure 2 , Figure 4 The above clamping mechanism can be adopted Figure 2 The structure shown in the figure, specifically, the clamping mechanism includes a connecting frame 3 and a rotating rod 4 hinged on the connecting frame 3, the connecting frame 3 includes a longitudinal rod 31 and a cross rod 32 that are fixedly connected, wherein the longitudinal rod 31 is connected to the middle part of the cross rod 32, and is located above the cross rod 32 and connected to the action end of the electric telescopic cylinder 11, the number of the rotating rods 4 is two, the two rotating rods 4 are longitudinally arranged, and are both hinged on the cross rod 32, and are symmetrical with the longitudinal rod 31. Specifically, the rotating rod 4 includes a first rod body 41 and a second rod body 42 connected up and down, wherein the first rod body 41 is inclined from bottom to top toward one side of the longitudinal rod 31, and the second rod body 42 is inclined from top to bottom toward one side of the longitudinal rod 31, the second rod body 42 is hinged to the cross rod 32, the end of the second rod body 42 away from the first rod body 41 extends to the bottom of the cross rod 32, and is laterally protruded to one side of the clamping head with a claw 421, the upper end surface of the claw 421 is a horizontal plane, and the claw 421 is away from the second The end of the rod body 42 is provided with a guide surface 422 inclined outward from top to bottom, and the claw 421 is used to clamp the clamping head. In the present embodiment, the clamping head is an enlarged block 221 arranged at the end of the pull rod 22 away from the tamping head 2, wherein the lower end surface of the enlarged block 221 is a horizontal surface, and the upper end surface is a conical surface. The distance between the two oppositely arranged claws 421 is less than the width of the enlarged block 221. In actual operation, under the action of the elevator, the claw 421 moves downward and contacts the upper end surface of the enlarged block 221, and the guide surface 422 on the claw 421 slides downward on the conical surface at the upper end of the enlarged block 221. As the claw 421 continues to move downward, the second rod body 42 can be rotated outward, thereby increasing the distance between the two oppositely arranged claws 421, so that the claw 421 moves to the bottom of the enlarged block 221, and stops descending after reaching the predetermined position, and starts to rise under the action of the elevator.

[0041] See also Figure 5 , Figure 5It is a schematic diagram of the clamping mechanism releasing the tamping head 2 after the claw 421 is lifted to a predetermined height. The specific process is that the elevator is started, the claw 421 is clamped on the lower end surface of the expanded block 221, and drives the tamping head 2 to move upward. During the movement, the first rod body 41 approaches and is inserted into the through hole 102 opened on the end cover 101. As the first rod body 41 continues to rise, under the interaction between the outer wall of the first rod body 41 and the inner wall of the through hole 102, the first rod body 41 drives the second rod body 42 to rotate outward, thereby making the claws 421 set at the ends of the second rod body 42 move away from each other, so that the claws 421 are separated from the expanded block 221, so that the tamping head 2 can fall downward to compact the ground.

[0042] See also Figure 2 , Figure 4 and Figure 5 In order to ensure that the cross bar 32 moves smoothly up and down, a second slide groove 321 adapted to the width of the cross bar 32 is provided on the side walls of the shell 1 corresponding to the two ends of the cross bar 32. The second slide groove 321 is longitudinally arranged, and the cross bar 32 is slidably mounted in the second slide groove 321, so that the cross bar 32 can only move up and down along the second slide groove 321, and the second slide groove 321 limits the lateral movement of the cross bar 32.

[0043] For further information, see Figure 2 , Figure 4 and Figure 5 A second elastic member 33 is further provided between the longitudinal rod 31 and the first rod body 41 . The optional second elastic member 33 is a spring. During use, the elastic force provided by the spring can effectively assist the rotation of the first rod body 41 or the second rod body 42 .

[0044] For further information, see Figure 2 , Figure 4 and Figure 5 A mounting seat 10 is provided on the outer side wall of the shell 1, and the mounting seat 10 is used to mount the shell 1 on some traction vehicles, so as to facilitate the movement of the tamping device provided by the present invention.

[0045] See also Figures 1 to 5The working process of the compacting device of the present invention is as follows: first, the elevator is started, and the electric telescopic cylinder 11 in the elevator moves the telescopic end downward, so that the claw 421 contacts the enlarged block 221 on the pull rod 22 downward, and the guide surface 422 on the claw 421 slides on the conical surface at the upper end of the enlarged block 221, and as the claw 421 continues to move downward, the second rod body 42 can be rotated outward, so that the two oppositely arranged claws 421 are separated from each other, so that the first rod body 41 is rotated inward and the second elastic member is compressed. 33, as the claw 421 continues to move downward, the claw 421 moves to the bottom of the expanded block 221, and under the elastic force of the second elastic member 33, the first rod 41 rotates outward, thereby driving the second rod 42 to rotate inward so that the two claws 421 arranged opposite to each other are close to each other, so that the distance between the two claws 421 is smaller than the lateral width of the expanded block 221, and then, the telescopic end of the electric telescopic cylinder 11 moves downward to the preset position, and the electric telescopic cylinder 11 starts to move upward, and the claw 421 moves upward. During the upward movement, the upper end surface of the claw 421 is stuck on the lower end surface of the expanded block 221, thereby driving the tamping head 2 to rise. As the electric telescopic cylinder 11 rises, the iron core 21 penetrates into the coil 6. Driven by the tamping head 2, the guard plate 8 moves upward and approaches the support plate 5. The proximity switch 9 senses the approach of the guard plate 8 and energizes the coil 6 and the electromagnet, so that the iron core 21 and the electromagnet 7 generate mutually repelling magnetic forces. As the electric telescopic cylinder 11 continues to rise, the first rod body 41 is inserted into the end cover 1. In the through hole 102 on 01, the outer wall of the first rod body 41 interacts with the inner wall of the through hole 102, so that the first rod body 41 rotates inward, and then drives the second rod body 42 to rotate outward, so that the two oppositely arranged claws 421 move away from each other and break away from the expanded block 221. Under the action of gravity and the magnetic force of the electromagnet 7, the tamping head 2 falls rapidly to compact the ground. At this time, the electric telescopic cylinder 11 rises to the predetermined position. In the next step, the electric telescopic cylinder 11 starts to repeatedly move downward to cycle the above process.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A compaction device for highway engineering, It is characterized in that include: Housing (1); A tamping head (2), the tamping head (2) being slidably disposed inside the shell (1); an elevator, arranged on the housing (1), comprising a power mechanism and a clamping mechanism, the clamping mechanism being used to clamp the tamping head (2), and the power mechanism being used to lift and lower the clamping mechanism; A support plate (5) is arranged in the shell (1) and is located above the tamping head (2). A guide hole is provided on the support plate (5). A coil (6) is provided on the upper end surface of the support plate (5). The coil (6) is concentric with the guide hole, and the inner diameter of the coil (6) is greater than or equal to the diameter of the guide hole. An iron core (21) is slidably penetrated in the guide hole, and the lower end of the iron core (21) is fixedly connected to the tamping head (2); An electromagnet (7) is arranged on the upper part of the housing (1), is located above the coil (6), and corresponds to the iron core (21); A proximity switch (9) is arranged on one side of the support plate (5) close to the tamping head (2) and is used to sense the position of the tamping head (2) so as to open or close the circuit between the coil (6) and the electromagnet (7); The elevator lifts the tamping head (2) so that the iron core (21) rises and penetrates into the coil (6). When the tamping head (2) approaches the proximity switch (9) on the support plate (5), the proximity switch (9) is closed, the coil (6) and the electromagnet (7) are energized, the iron core (21) generates magnetic force and repels the magnetism of the electromagnet (7). After the elevator rises to a predetermined position, the tamping head (2) is released, the tamping head (2) falls away from the proximity switch (9), and the proximity switch (9) is disconnected.

2. A compaction device for highway engineering as claimed in claim 1, It is characterized in that A guard plate (8) is provided between the support plate (5) and the tamping head (2); the guard plate (8) is slidably connected to the housing (1); a first clearance hole for avoiding the iron core (21) is provided on the guard plate (8); and a first elastic member (81) is provided between the support plate (5) and the guard plate (8).

3. A compaction device for highway engineering as claimed in claim 2, It is characterized in that A pull rod (22) is fixedly provided on the tamping head (2), and one end of the pull rod (22) away from the tamping head (2) longitudinally and upwardly penetrates the guard plate (8) and the support plate (5) in sequence, and extends to the top of the support plate (5). The pull rod (22) is slidably connected to the guard plate (8) and the support plate (5). A clamping head is provided at one end of the pull rod (22) away from the tamping head (2) for cooperating with the clamping mechanism.

4. A compaction device for highway engineering as claimed in claim 3, It is characterized in that The clamping mechanism comprises a connecting frame (3) and a rotating rod (4), the power mechanism is connected to the connecting frame (3), the rotating rod (4) is two in number and symmetrically hinged on both sides of the connecting frame (3), the rotating rod (4) comprises a first rod body (41) and a second rod body (42) connected from top to bottom, the first rod body (41) is inclined inward from bottom to top, and the second rod body (42) is inclined inward from top to bottom, the connecting frame (3) is hinged to the second rod body (42), and a clamping claw (421) is provided at one end of the second rod body (42) away from the first rod body (41), and the clamping claw (421) is used to clamp the clamping head.

5. A compaction device for highway engineering as claimed in claim 4, It is characterized in that The clamping claw (421) protrudes laterally toward one side of the clamping head, the upper end surface of the clamping claw (421) is a horizontal plane, the end of the clamping claw (421) away from the second rod body (42) is provided with a guide surface (422) inclined outward from top to bottom, the clamping head is an enlarged block (221) arranged at the end of the pull rod (22), the lower end surface of the enlarged block (221) is a horizontal plane, the distance between the two oppositely arranged clamping claws (421) is smaller than the width of the enlarged block (221), the clamping claw (421) moves from top to bottom, guides the guide surface (422) to slide on the side of the enlarged block (221), and causes the second rod body (42) to rotate outward, so that the clamping claw (421) moves below the enlarged block (221).

6. A compacting device for highway engineering as claimed in claim 5, It is characterized in that An end cover (101) is provided on the top of the shell (1), and a through hole (102) is opened on the end cover (101). The action end of the power mechanism passes through the through hole (102) to connect with the connecting frame (3). The power mechanism is started to drive the connecting frame (3) to move upward, so that the first rod body (41) is inserted into the through hole (102), and the two first rod bodies (41) are close to each other, so that the second rod body (42) rotates outward, so that the claw (421) is separated from the enlarged block (221).

7. A compaction device for highway engineering as claimed in claim 6, It is characterized in that The connecting frame (3) comprises a cross bar (32) and a longitudinal bar (31) which are fixedly connected, the second rod body (42) is hinged on the cross bar (32), the action end of the power mechanism is connected to the longitudinal bar (31), and longitudinally arranged sliding grooves are provided on two side walls corresponding to the cross bar (32) in the housing (1), and the cross bar (32) is slidably connected in the sliding grooves.

8. A compacting device for highway engineering as claimed in claim 7, It is characterized in that A second elastic member (33) is provided between the longitudinal rod (31) and the first rod body (41).

9. A compaction device for highway engineering as claimed in claim 1, It is characterized in that A bracket (103) is provided on the top of the housing (1), and the power mechanism is arranged on the bracket (103).

10. A compacting device for highway engineering as claimed in claim 1, It is characterized in that A mounting seat (10) is provided on the side wall of the housing (1), and the mounting seat (10) is used for connecting to a tractor.

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